Wheel-truing apparatus.



A 9 1 $31M 1 A511:

J. M. GRIFFIN & 0. P. ALLEN.

WHEEL TRUING APPARATUS.

APPLICATION FILED DEC. 11, 1914.

Patented Apr 20, 1915.

2 SHEETS-SHEET 1.

J. M. GRIFFIN & 0. P. ALLEN.

WHEEL TRUING APPARATUS.

APPLICATION FILED use. H, mm.

2 SKEETS-SHEET 2.

WITHE55E5 63 A gC Qi/ m Q fiTTOl'iiEY Patented Apr. 20, 1915.

HUDSON M. GRIFFIN AND OLIVER 1P. ALLEN, OT DETROIT, MICHIGAN, ASSTGNORST0 WHEEL TRUING BRAKE SHOE COMPANY, OF DETROIT, MICHIGAN, A CORPORATIONOF MICHIGAN.

WHEEL-TRUING APPATUS.

Specification of Letters Patent.

Patented Apr. ll, TOM.

Application filed December 11, 1914. Serial No. 876.747.

the same, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to apparatus for truing car wheels, and has'forits object the truing of car wheels by abrading shoes or blocks whilethe car is in the barns or in the shops.

Heretofore it has been customary to true car wheels by using abradingshoes upon the cars in place of the brake shoes while the car is inservice, or else the car wheels had been completely removed from thecars and the wheels ground down to obtain a perfectly circularperiphery. Some traction companies do not like to put abrading shoesupon cars in service and the other method of taking the car wheels ofiand grinding them by special grinding machinery, is a rather difficultand expensive one. It is to obviate these disadvantages that theapparatus hereinafter to be described is designed.

.Figure 1 is a plan view, the abrading apparatus being omitted. Fig. 2is a cross section of the complete apparatus. Fig. 3 is a longitudinalsection along the track showing a car wheel mounted upon the apparatusin position for truing. Fig. i shows the apparatus when not in use witha section of track inserted above it so. that the tracks can be used forother purposes. Fig. 5 is a detail plan view of the'abrading blocks andgear.

a designates a pit between the rails 12 b which are the shallow railswhich are ordinarily used in shops or barns.

r designates a motor which may be either a new motor or an old motorwhich has been taken off of a car which has been taken out of service.

1'! is speed reduction caring connecting with the shaft e which 1sjournaled in the bearings f f and which has, at each end in alinementwith the rails b b, the Wheels 9 9.

These wheels are mounted so that their peripheries come flush with theplane of the lower side of the rails. Similarly mounted and journaledadjacent to the shaft 0 and the wheels g g, is the idler shaft k andwheels 6 1'. Of course this could be operatively connected with theshaft e if it is desired, but this is not necessary. This gearing is apreferred form of construction, but of course the motor need notnecessarily be located in' the pit and any suitable drive connectionsmay be used between the motor and the wheels 9 and i. 4

The rails b b are cut away above the wheels 9 and h and a section 9' isinsertible in this cut away portion to completely cover the wheels 9 andi and put the rails in condition for ordinary service in the barns orshops. When the section 7' is taken out on each side a car may be causedto travel along the rails until the pair of wheels that are desired tobe trued rest upon the wheels 9 and 2'. It will be noticed that the endsof the rails are beveled oil at 70 so that the wheels may easily dropinto the recess and onto the top of the wheels 9 and i. The motor 0 maythen be started and frictional contact between the wheels 9 and thewheels to be trued, will spin the latter.

The abrading shoe may be substituted in the brake rigging for theordinary brakeshoe and the brakes applied to the wheels in the ordinaryway to secure abrasion or the apparatus shown in the drawings may beused. This comprises at each side of each rail a pair of eye-bolts p, towhich, after the wheel to be ground is in place, the uprights m may behooked. The uprights adjacent to one rail are connected with theuprights adjacent to the other rails bv tie bars 11.. The members ofeach pair of'uprights on the outside of each rail are connected by theconnecting rods and turnbuckles 0. Hence the abrading blocks 1 may beapplied to the wheels by adjusting the turn-buckles 0. One advantage ofthis form of rigging is that it is in no way dependent upon thebrake-rigging of the car and two abrading blocks may be used for each-\\'heei and hence the time necessary for the truing is shortened.Another advantage of this type of rigging especially as connected withthe driving means shown in the drawings is around in a somewhat circularcourse due to the jumping of the wheel and the eripheral path is notconcentric to the point occupied by the center of the wheel when thewheel is at rest upon the two lower wheels. This action causesbrake-shoes or blocks which are rigidly held to grind the wheelunevenly, but the rigging shown in the drawing can oscillate with thewheel and consequently insures a true concentric peripher with this typeof drive for the car whee s. 7

From the above description it will be seen that car Wheels may be easilytrued at night the barnsor at the shops with ver little difiiculty andthat it makes no di. erence whether the truck wheels to be trued areconnected to the motor or not. They may be trued with this method andapparatus with very little difliculty and expense.

What we claim is:

1. The combination with a track having a pair of rails with'cut'outportions at opposite points, a plurality of wheels rotatably mounted ineach cut out portion so that their peripheries at the top comesubstantially even With the rails, means for holding an abrading blockagainst the car wheel, the said abrading block and means for driving oneor more ofsaid wheels located in said gaps for the purpose of spinning apair of car wheels.

2. The combination with a track provided with a pair of railshaving-opposite gaps, rail sections which can be made to brid e the gapsand which are removably securab e in said gaps, a lurality of wheelsrotatably mounted in eac gap for supporting a pair of car wheels, anabrading block, means for supporting the abrading block against the carwheels, abrading the two abradin car wheels, an eye-bolt secured wheel,and means for driving one or more of the wheels'in' the gaps for thepurpose of spinning the car wheels.

3. Apparatus for truing car wheels, having in combination means for.spinnin the ing an abrading b ock on each side of the wheel, andconnecting means for tightenin blocks against the whee 4. Apparatus ortruing car wheels, having in combination means for spinnin the carwheel, a pair of pivoted uprights, a rading blocks carried by said uprihts and arranged to be held against the w eels, and a turn-buckleconnecting the two upri hts. V 5. Apparatus for truing car whee s,having in' combination means for spinning the to a support, an uprighthooked into the ey -bolt, a second eye-bolt secured to a su port, anupright hooked into the second eye-bolt, an abrading block carried onone of the uprights, andtightening means between the two uprights formechanically drawing them toward each other.

6. Apparatus for truing car wheels, having in combination with a trackhaving cut out portions, a pair of wheels in alinement with each rail ofthe track and located in said out out portion, and means for journalingsaid Wheels, comprisin a pair of ivoted uprights, an abrading lockcarrieon the top of each upright, and means for mechanically drawing theuprights toward each other.

In testimony whereof, we sign this specification in the presence of twowitnesses.

JUDSON M. GRIFFIN. OLIVER P. ALLEN.

Witnesses:

STUART C. BARNES, VIRGINIA C. SPRA'rr.

blocks, means for old- 7

